R6120 AC 1200 firmware issues

[Hafeez]

While the firmware update is in progress, the router got disconnected. After restarting the router, the power light does not turn on. When pressed reset and power button together, the power light blinks. Cannot connect to the router through 192.168.1.1.

Tried to upload the firmware R6120_V1.0.0.76.img throug TFTP by changing the IP setting of the ethernet as 192.168.1.10 and the gateway as 192.168.1.1

C:\Users\USER\Desktop>tftp -i 192.168.1.1 put R6120_V1.0.0.76.img
Connect request failed

C:\Users\USER\Desktop>

C:\Users\USER\Desktop>ping 192.168.1.1

Pinging 192.168.1.1 with 32 bytes of data
Reply from 192.168.1.10: Destination host unreachable.
Reply from 192.168.1.10: Destination host unreachable.
Reply from 192.168.1.10: Destination host unreachable.
Reply from 192.168.1.10: Destination host unreachable.

Ping statistics for 192.168.1.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

C:\Users\USER\Desktop>

[plemans]

many things can go wrong with tftp from it not being activate to the signal not being sent at the right time. 

are you on windows? if so, follow this guide

https://kb.netgear.com/000059634/How-to-upload-firmware-to-a-NETGEAR-router-using-Windows-TFTP

just make sure you enable tftp 

https://www.thewindowsclub.com/enable-tftp-windows-10

and here's a video walk through using a tftp client. Use the built in one for windows 10 though. the video is more of an example of how its done. 

https://www.youtube.com/watch?v=R9DLrLQrpaw

and if that doesn't work, you can try using nmrpflash

https://github.com/jclehner/nmrpflash